Competition for Carbon in Soil and Rhizosphere, a Mechanism Involved in Biological Control of Fusarium Wilts

  • Yvonne Couteaudier
Part of the NATO ASI Series book series (NSSA, volume 230)

Abstract

Different mechanisms have been identified or proposed to explain biological control of Fusarium wilt by nonpathogenic strains of Fusarium oxysporum (Alabouvette, 1990; Mandeel and Baker, 1991). One of them is related to competition for nutrients in soil and rhizosphere. This hypothesis was proposed as the result of studies of suppressive soils. In order to explain the suppressiveness of the soil from Châteaurenard, Rouxel et al. (1979) first suggested the existance of intrageneric and/or intraspecific competition between pathogenic and nonpathogenic fusaria; thereafter, it was proposed that suppression was due to nutrient competition between pathogenic and nonpathogenic Fusarium oxysporum (Alabouvette et al., 1984). Recently, Mandeel and Baker (1991) examined the possibility of the association of this mechanism with biological control of Fusarium wilt of cucumber by two nonpathogenic strains of Fusarium oxysporum.

Keywords

Biological Control Fusarium Oxysporum Fusarium Wilt Inoculum Density Nonpathogenic Strain 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1992

Authors and Affiliations

  • Yvonne Couteaudier
    • 1
  1. 1.I.N.R.A. Flore PathogèneDijonFrance

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